634132231 has 4 divisors (see below), whose sum is σ = 635075152. Its totient is φ = 633189312.

The previous prime is 634132207. The next prime is 634132267. The reversal of 634132231 is 132231436.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 634132231 - 2¹¹ = 634130183 is a prime.

It is a super-2 number, since 2×634132231² = 804247372786074722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 634132196 and 634132205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (634133231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 470451 + ... + 471796.

It is an arithmetic number, because the mean of its divisors is an integer number (158768788).

Almost surely, 2^634132231 is an apocalyptic number.

634132231 is a deficient number, since it is larger than the sum of its proper divisors (942921).

634132231 is an equidigital number, since it uses as much as digits as its factorization.

634132231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 942920.

The product of its digits is 2592, while the sum is 25.

The square root of 634132231 is about 25181.9822690748. The cubic root of 634132231 is about 859.1320931300.

Adding to 634132231 its reverse (132231436), we get a palindrome (766363667).

The spelling of 634132231 in words is "six hundred thirty-four million, one hundred thirty-two thousand, two hundred thirty-one".